Verdict: If you are moderately tech-savvy, the Nissan Map Update Tool is the clear winner. If you dread technology or own a Nissan with a complex audio system (e.g., Bose with navigation), paying the dealer for peace of mind is valid.
Here is the definitive process to update your maps. Set aside approximately 60 to 90 minutes for the entire process—mostly for download and USB writing. nissan map update tool